[in Japanese]

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[in Japanese]

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[in Japanese]

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[in Japanese]

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[in Japanese]

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A digital sound transmission system for television broadcasting via satellite has been developed. A digitally-modulated subcarrier is used for the transmission of sounds and data. This system provides four high-quality 14/10 bit near-instantaneous companding sounds sampled at 32kHz or two high-quality 16bit linear-coded sounds sampled at 48kHz. Data service such as facsimile is also available.
Furthermore, the sound reception quality is better than the corresponding picture quality until at least the grade of 1.5 is reached on a five-grade picture evaluation scale.

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Behaviors of eye movement to the display of Japanese sentences are observed and distributions of fixation times and distances between fixating points to various physical conditions of letters are measured with a television eye-camera. As a result, the mean value of fixation times is always constant and those of distances between fixating points are nearly constant for the letter numbers in mixed “kanji” sentences.
Behaviors of eye movements are next observed and measured when visual subject fields are limited on the television screen by electronic circuits. Here, distributions of fixation time are varied with the size of limited visual fields with the distance between fixating points equal to the width of a letter.
From these experiments, it is found that eye movements are not only controlled by physical features of input patterns, but also by the top-down cognition processing in the brain.

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